142244131 has 4 divisors (see below), whose sum is σ = 144576064. Its totient is φ = 139912200.

The previous prime is 142244111. The next prime is 142244143. The reversal of 142244131 is 131442241.

It is a happy number.

142244131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142244131 - 2²³ = 133855523 is a prime.

It is a super-2 number, since 2×142244131² = 40466785607890322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142244111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165875 + ... + 1165996.

It is an arithmetic number, because the mean of its divisors is an integer number (36144016).

Almost surely, 2^142244131 is an apocalyptic number.

142244131 is a deficient number, since it is larger than the sum of its proper divisors (2331933).

142244131 is an equidigital number, since it uses as much as digits as its factorization.

142244131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331932.

The product of its digits is 768, while the sum is 22.

The square root of 142244131 is about 11926.6143980595. The cubic root of 142244131 is about 522.0091538938.

Adding to 142244131 its reverse (131442241), we get a palindrome (273686372).

The spelling of 142244131 in words is "one hundred forty-two million, two hundred forty-four thousand, one hundred thirty-one".